plc.d/httpd

   1 #!/bin/bash
   2 #
   3 # priority: 600
   4 #
   5 # Configure Apache web server
   6 #
   7 # Mark Huang <mlhuang@cs.princeton.edu>
   8 # Copyright (C) 2006 The Trustees of Princeton University
   9 #
  10
  11 # Source function library and configuration
  12 . /etc/plc.d/functions
  13 . /etc/planetlab/plc_config
  14
  15 # Be verbose
  16 set -x
  17
  18 # Default locations
  19 DocumentRoot=/var/www/html
  20 php_ini=/etc/php.ini
  21 httpd_conf=/etc/httpd/conf/httpd.conf
  22 ssl_conf=/etc/httpd/conf.d/ssl.conf
  23 plc_conf=/etc/httpd/conf.d/plc.conf
  24
  25 function disable_file () {
  26     file=$1; shift
  27     [ -f $file ] && mv -f $file $file.disabled
  28 }
  29 function enable_file () {
  30     file=$1; shift
  31     [ ! -f $file ] && mv -f $file.disabled $file
  32 }
  33
  34 case "$1" in
  35     start)
  36         if [ "$PLC_API_ENABLED" != "1" -a \
  37              "$PLC_BOOT_ENABLED" != "1" -a \
  38              "$PLC_WWW_ENABLED" != "1" ] ; then
  39             exit 0
  40         fi
  41
  42         MESSAGE=$"Starting web server"
  43         dialog "$MESSAGE"
  44
  45         # set document root - not really useful on fedora but just in case
  46         sed -i -e "s@^DocumentRoot.*@DocumentRoot \"$DocumentRoot\"@" $httpd_conf
  47         # whether WWW is enabled or not :
  48         if [ "$PLC_WWW_ENABLED" != "1" ] ; then
  49             # avoid hitting drupal, that would try to connect to the db and create noise
  50             disable_file $DocumentRoot/index.php
  51         else
  52             enable_file $DocumentRoot/index.php
  53         fi
  54
  55         # Set the default include path
  56         include_path=".:$DocumentRoot/planetlab/includes:$DocumentRoot/plekit/php:$DocumentRoot/generated:/etc/planetlab/php:/usr/share/plc_api/php"
  57         sed -i -e "s@[;]*include_path = \"\.:.*\"@include_path = \"$include_path\"@" $php_ini
  58
  59         # Set open_basedir so as to avoid leaks
  60         open_basedir="$DocumentRoot:/etc/planetlab/php:/usr/share/plc_api/php:/var/log/myslice:/var/tmp/bootmedium:/var/log/bm:/tmp"
  61         sed -i -e "s@[;]*open_basedir =.*@open_basedir = \"$open_basedir\"@" $php_ini
  62
  63         # for php-5.3 under fedora12, otherwise issues tons of warning messages
  64         # Set timezone in php.ini if not already there
  65         if grep '^;date.timezone' $php_ini >& /dev/null; then
  66             dialog 'Setting PHP timezone to GMT'
  67             sed -i -e 's,^;date.timezone.*,date.timezone = GMT,' $php_ini
  68         fi
  69
  70         if grep '^short_open_tag = Off' $php_ini >& /dev/null; then
  71             sed -i -e 's,^short_open_tag = Off,short_open_tag = On,' $php_ini
  72         fi
  73
  74         # Disable default Listen directive
  75         sed -i -e '/^Listen/d' $httpd_conf
  76
  77         plc_api_path_noslash=$(echo $PLC_API_PATH | sed -e s,/,,g)
  78         # Set the port numbers
  79         for server in WWW API BOOT ; do
  80             enabled=PLC_${server}_ENABLED
  81             if [ "${!enabled}" != "1" ] ; then
  82                 continue
  83             fi
  84             hostname=PLC_${server}_HOST
  85             http_port=PLC_${server}_PORT
  86             https_port=PLC_${server}_SSL_PORT
  87
  88             # API should always be accessed via SSL
  89             if [ "$server" = "API" ] ; then
  90                 https_port=${!http_port}
  91                 http_port=
  92             fi
  93
  94             echo "# DBG server=$server hostname=${!hostname} http_port=${!http_port} https_port=${!https_port}"
  95
  96             # Check if we are already listening on these ports
  97             skip_http=0
  98             skip_https=0
  99             for previous_server in WWW API BOOT ; do
 100                 if [ "$server" = "$previous_server" ] ; then
 101                     break
 102                 fi
 103                 previous_enabled=PLC_${previous_server}_ENABLED
 104                 if [ "${!previous_enabled}" != "1" ] ; then
 105                     continue
 106                 fi
 107                 previous_http_port=PLC_${previous_server}_PORT
 108                 previous_https_port=PLC_${previous_server}_SSL_PORT
 109
 110                 if [ "${!http_port}" = "${!previous_http_port}" ] ; then
 111                     skip_http=1
 112                 fi
 113                 if [ "${!https_port}" = "${!previous_https_port}" ] ; then
 114                     skip_https=1
 115                 fi
 116             done
 117
 118             # HTTP configuration
 119             if [ $skip_http -eq 0 -a -n "${!http_port}" ] ; then
 120                 cat <<EOF
 121 Listen ${!http_port}
 122 <VirtualHost *:${!http_port}>
 123     # Make sure that the admin web pages are always accessed via SSL
 124     Redirect /db https://$PLC_WWW_HOST:$PLC_WWW_SSL_PORT/db
 125     Redirect /planetlab https://$PLC_WWW_HOST:$PLC_WWW_SSL_PORT/planetlab
 126 # as a matter of fact most xmlrpc clients won't follow the redirection
 127 # so this is mostly rethorical, but just in case...
 128    Redirect /$plc_api_path_noslash https://$PLC_WWW_HOST:$PLC_WWW_SSL_PORT/$plc_api_path_noslash
 129 </VirtualHost>
 130
 131 EOF
 132             fi
 133
 134             # HTTPS configuration
 135             if [ $skip_https -eq 0 -a -n "${!https_port}" ] ; then
 136                 # XXX Cannot support NameVirtualHost over SSL. If
 137                 # the API, boot, and web servers are all running
 138                 # on the same machine, the web server certificate
 139                 # takes precedence.
 140                 sed -i \
 141                     -e "s/^Listen .*/Listen ${!https_port}/" \
 142                     -e "s/<VirtualHost _default_:.*>/<VirtualHost _default_:${!https_port}>/" \
 143                     $ssl_conf
 144                 # this is used to locate the right certificates
 145                 server_lower=$(echo $server | tr 'A-Z' 'a-z')
 146
 147                 # which one is used is currently configured in myplc.spec,
 148                 # with mod_python preferred
 149                 if rpm -q mod_python >& /dev/null ; then
 150                     configure_for_mod_python=true
 151                 elif rpm -q mod_wsgi >& /dev/null ; then
 152                     configure_for_mod_wsgi=true
 153                 else
 154                     echo "Requires mod_python or mod_wsgi.... exiting"
 155                     exit 1
 156                 fi
 157
 158                 # It would be tempting to use <IfModule> here
 159                 # but early tests showed this could be tricky/fragile
 160                 # So let's hard-wire it for one module
 161                 # A lot of trial-and -error was involved in getting this that way...
 162
 163                 if [ -n "$configure_for_mod_python" ] ; then
 164 #################### for mod_python
 165                     cat <<EOF
 166 # mod_python location
 167 <Location /PLCAPI/>
 168     SetHandler mod_python
 169     PythonPath "sys.path + ['/usr/share/plc_api']"
 170     PythonHandler apache.ModPython
 171 </Location>
 172 EOF
 173
 174                 elif [ -n "$configure_for_mod_wsgi" ] ; then
 175 #################### for mod_wsgi
 176                     cat <<EOF
 177 # create wsgi socket where we have the permission
 178 WSGISocketPrefix run/wsgi
 179
 180 <VirtualHost *:${!https_port}>
 181
 182    # SSL
 183    SSLEngine On
 184    SSLCertificateFile /etc/planetlab/${server_lower}_ssl.crt
 185    SSLCertificateKeyFile /etc/planetlab/${server_lower}_ssl.key
 186    SSLCertificateChainFile /etc/planetlab/${server_lower}_ca_ssl.crt
 187
 188    WSGIScriptAlias /$plc_api_path_noslash /usr/share/plc_api/apache/plc.wsgi
 189 # xxx would be cool to be able to tweak this through config
 190    WSGIDaemonProcess plcapi-wsgi-ssl user=apache group=apache processes=1 threads=25
 191    WSGIProcessGroup plcapi-wsgi-ssl
 192
 193    <Directory "/usr/share/plc_api/apache">
 194       Options +ExecCGI
 195       $(apache_allow)
 196    </Directory>
 197
 198 </VirtualHost>
 199 EOF
 200                 fi
 201             fi
 202         done >$plc_conf
 203
 204         # Set custom Apache directives
 205         (
 206             # could be restricted to boot boxes but harmless..
 207             cat <<EOF
 208 AddType application/octet-stream .iso
 209 AddType application/octet-stream .usb
 210 EOF
 211             # make sure /PLCAPI can't get accessed if API not enabled here
 212             if [ "$PLC_API_ENABLED" != "1" ] ; then
 213                 cat <<EOF
 214 # mod_wsgi location
 215 <Location $PLC_API_PATH>
 216     $(apache_forbid)
 217 </Location>
 218 EOF
 219             fi
 220
 221             # redirect www requests if not on the right server
 222             if [ "$PLC_WWW_ENABLED" != "1" ] ; then
 223                 cat <<EOF
 224 Redirect /index.html http://$PLC_WWW_HOST:$PLC_WWW_PORT/
 225 EOF
 226             fi
 227         ) >>$plc_conf
 228
 229         # Make alpina-logs directory writable for bootmanager log upload
 230         chown apache:apache $DocumentRoot/alpina-logs/nodes
 231
 232         # Make the Drupal files upload directory owned by Apache
 233         mkdir -p $DocumentRoot/files
 234         chown apache:apache $DocumentRoot/files
 235
 236         # Symlink any (real) files or directories in
 237         # /data/var/www/html/* to /var/www/html/. We could descend
 238         # into subdirectories, but the code to do so properly would be
 239         # madness.
 240         for file in /data/$DocumentRoot/* ; do
 241             if [ -e "$file" -a ! -h "$file" ] ; then
 242                 base=$(basename "$file")
 243                 if [ ! -e "$DocumentRoot/$base" ] ; then
 244                     ln -nsf "$file" "$DocumentRoot/$base"
 245                 fi
 246             fi
 247         done
 248
 249         # Cleanup broken symlinks
 250         for file in $DocumentRoot/* ; do
 251             if [ -h "$file" -a ! -e "$file" ] ; then
 252                 rm -f "$file"
 253             fi
 254         done
 255
 256         # Old style PHP constants
 257         mkdir -p /etc/planetlab/php
 258         cat >/etc/planetlab/php/site_constants.php <<"EOF"
 259 <?php
 260 include('plc_config.php');
 261
 262 define('PL_API_SERVER', PLC_API_HOST);
 263 define('PL_API_PATH', PLC_API_PATH);
 264 define('PL_API_PORT', PLC_API_PORT);
 265 define('PL_API_CAPABILITY_AUTH_METHOD', 'capability');
 266 define('PL_API_CAPABILITY_PASS', PLC_API_MAINTENANCE_PASSWORD);
 267 define('PL_API_CAPABILITY_USERNAME', PLC_API_MAINTENANCE_USER);
 268 define('WWW_BASE', PLC_WWW_HOST);
 269 define('BOOT_BASE', PLC_BOOT_HOST);
 270 define('DEBUG', PLC_WWW_DEBUG);
 271 define('API_CALL_DEBUG', PLC_API_DEBUG);
 272 define('SENDMAIL', PLC_MAIL_ENABLED);
 273 define('PLANETLAB_SUPPORT_EMAIL', PLC_NAME . ' Support <' . PLC_MAIL_SUPPORT_ADDRESS . '>');
 274 define('PLANETLAB_SUPPORT_EMAIL_ONLY', PLC_MAIL_SUPPORT_ADDRESS);
 275 ?>
 276 EOF
 277
 278         ## patch php.ini
 279         # memory limit
 280         sed -i -e 's,^memory_limit = 32M *;,memory_limit = 80M ; patch myplc -- ,' $php_ini
 281         # log_errors : is On by default
 282         # error_log
 283         if ! grep '^error_log *=' $php_ini > /dev/null ; then
 284           echo 'error_log = /var/log/php.log' >> $php_ini
 285           touch /var/log/php.log
 286           chmod 666 /var/log/php.log
 287         fi
 288
 289         ## make room for logs
 290         touch /var/log/plcapi.log
 291         chmod 666 /var/log/plcapi.log
 292
 293         plc_daemon httpd
 294         check
 295
 296         result "$MESSAGE"
 297         ;;
 298
 299     stop)
 300         MESSAGE=$"Stopping web server"
 301         dialog "$MESSAGE"
 302
 303         killproc plc_httpd
 304         check
 305
 306         result "$MESSAGE"
 307         ;;
 308 esac
 309
 310 exit $ERRORS